CN100448720C - Method for reaching a trigger decision - Google Patents
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- CN100448720C CN100448720C CNB2004800278806A CN200480027880A CN100448720C CN 100448720 C CN100448720 C CN 100448720C CN B2004800278806 A CNB2004800278806 A CN B2004800278806A CN 200480027880 A CN200480027880 A CN 200480027880A CN 100448720 C CN100448720 C CN 100448720C
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- 238000001914 filtration Methods 0.000 description 8
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- 230000002349 favourable effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R21/0133—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value by integrating the amplitude of the input signal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R2021/01322—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value comprising variable thresholds, e.g. depending from other collision parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R2021/01327—Angular velocity or angular acceleration
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Abstract
A method for reaching a trigger decision is disclosed, whereby said trigger decision is reached, based on vehicle dynamic data (ay, omegaX), whereby at least one vehicle transverse acceleration (ay), a yaw rate (omegaX) and the vehicle longitudinal axis are combined together as the vehicle dynamic data to reach the trigger decision. The vehicle transverse acceleration is then subjected to a threshold decision to reach the trigger decision, whereby the threshold value is fixed, based on the integrated vehicle transverse acceleration and the integrated yaw rate (omegaX).
Description
Technical field
The present invention relates to a kind of method that retracts system's starting decision that is used to form.
Background technology
A kind of method that retracts system's starting decision that is used to form is disclosed in DE 101 49 112 A1, particularly for earth ground stroke.Be construed as a kind of like this situation for earth ground stroke, wherein side direction takes place and skids in automobile after centrifugal process, enters into then on the ground with high friction coefficient, for example the unstable ground in next door, track.If for example automobile skids to the right, the tire on the right side will be subjected to strong deceleration so, and this can bring out the moment of torsion of automobile on unstable ground.This starting decision decides according to the vehicle dynamics data in DE 101 49 112 A1, has wherein used the float angle relevant with automobile cross velocity and automobile flip-flop movement as the vehicle dynamics data.Form the starting decision by corresponding threshold ratio then.
Known in WO 99/47384 A1, according to rotative speed, automobile speed and vehicle lateral acceleration, when overturning, earth ground stroke forms the starting decision around longitudinal vehicle axis.In this vehicle lateral acceleration and a definite threshold.Have only when this fixing threshold value is exceeded, just can form the starting decision.
Summary of the invention
By the method corresponding advantages that retracts system's starting decision that is used to form of the present invention is to realize the more starting of morning under the situation of earth ground stroke.This depends on that not only vehicle lateral acceleration is associated with rotative speed, and vehicle lateral acceleration additionally with a threshold, this threshold value is regulated according to the rotative speed of integration and the vehicle lateral acceleration of integration.The coupling of passing threshold can realize and the accident conditions better matching.This coupling is carried out in continuous or longer time gap.This threshold value determines following understanding, will by vehicle lateral acceleration and preferably the automobile cross velocity form several to comparing with characteristic curve.
Therefore earth ground stroke automobile test shows that the automobile cross velocity has material impact for the maximum flip angle that is reached, and the upset situation of automobile is had material impact.Detect and be used for around the signal of the rotation speed sensor of longitudinal vehicle axis rotation and the signal correction of itself and automobile acceleration pick-up transversely is associated in all is favourable in any case for forming the starting decision.This has higher reliability aspect start-up program more early.As mentioned above, vehicle lateral acceleration can apply a laterally braking on tire in earth ground stroke, and cause overturning.
Can also not only use the automobile cross velocity in addition, also use vehicle lateral acceleration and, can in the starting decision that realizes very early, can also realize starting the height reliability of decision thus around the rotative speed of longitudinal vehicle axis.
Realized the favourable improvement project that is used to form the method that retracts system's starting decision that provides in the independent claims by the measure listed in the dependent claims and improvement project.
The threshold value that especially preferably will be used for vehicle lateral acceleration is constructed according to the ratio of the pickup of the rotative speed of integration and integration.This ratio is called automobile overturning susceptibility.Understanding below the present invention has utilized: if because the inertia of mobile is braked by applied external force, then the inertia of automobile is just represented force of inertia.This force of inertia can be represented by the force vector that is applied on the centre of gravity of vehicle in the rigid body supposition of simplifying.This is shown in Figure 3.Automobile 30 has force of inertia F
Inertia, its vectors directed is right-hand.The right side of motor tire is obstacle 31 equally as can be seen, is wherein applying force of inertia F
InertiaCenter of gravity and the height between the obstacle 31 be H1.
For example the upper limb of kerb is high more for pivot point like this, is obstacle 31 here, holds under the unmodified situation trying hard to keep so, and is just more little by the torque that force of inertia causes.In second example in Fig. 3, automobile 33 also has a force of inertia F
Inertia, it points to the right side, but height H 2 is littler now, because obstacle 32 is higher.The result is that torque is also littler.Show that in the result pivot point is high more, automobile is tumbled, force of inertia must be big more, and the deceleration/decel that just records in automobile is big more, because be based on the car mass that remains unchanged.When pivot point is in the height of center of gravity or is positioned at center of gravity top, automobile just may not overturn so.Acceleration pick-up in the automobile is measured acceleration/accel, by this acceleration/accel can push away the size and Orientation of application force, but can not push away capable point of action.In order to obtain to cause the size of the horizontal force that automobile overturns, calculate the overturning susceptibility S of automobile according to following formula
Upset:
Construct by suitable applications at this initial point and terminating point.A kind of feasible implementation is, with initial moment T
0Be defined as the moment that acceleration/accel surpasses predetermined threshold value, will stop T constantly then
nBe set to a
yIntegration reach moment of a predetermined value.
Can be with a on the denominator of formula (1)
yIntegration from cross velocity, deduct, this cross velocity is applicable to because incipient stage of the centrifugal earth ground stroke that causes.Just represent in denominator that thus how much current speed in a lateral direction is, wherein passes through a because the speed that collision causes is fallen
yIntegration consider.Also can easily calculate thus at automobile kinetic energy transversely.Hit for side and can be understood as side collision here to for example kerb or also can be understood as owing to wheel is absorbed in the unstable ground and collide the side.
S in addition
UpsetCalculating can further following improvement, promptly when satisfying additional condition, for example just carry out integration above minimum value the time when acceleration/accel.S then
UpsetCalculating convert following formula to:
Wherein work as for example a of additional condition
yValue＞threshold value can not satisfy the time, weighting function f then
Weight=0, under all other situations, f
Weight=1.Determine overturning susceptibility constantly in each of overturning process, and corresponding to the computation rule correction that is suitable for of datum characteristic curve in this threshold value that is suitable for constantly.
Then can derived parameter g (S by the overturning susceptibility
Upset), it changes a that constitutes according to a kind of method with suitable manner
yThreshold value.Be used for derived parameter g (S
Upset) a kind of scheme be to provide by an analytic formula or another characteristic curve (referring to form), can be by analytic formula or another characteristic curve with each S
UpsetThe corresponding parameter g of value (S
Upset).G (S
Upset) effect for example can be, with a that exists
yThreshold value improve g (S
Upset), promptly
Threshold value (newly)=threshold value (old)+g (S
Upset),
Perhaps with g (S
Upset) multiply each other, promptly
Threshold value (newly)=threshold value (old) * g (S
Upset).
By g (S
Upset) come an example of correction threshold in Fig. 4, to provide.
Further advantageously, rotative speed and threshold value are made comparisons, and this threshold value is regulated according to the rotative speed of integration and the vehicle lateral acceleration of integration equally.Also the overturning susceptibility can be used to regulate aforesaid rotative speed threshold value at this.Also can use the datum characteristic curve of threshold value for this rotative speed, this datum characteristic curve is revised according to the upset susceptibility.
Description of drawings
Accompanying drawing shows embodiments of the invention, below it is described in detail.
Accompanying drawing illustrates:
Fig. 1 shows the block scheme that is used to carry out by the device of the inventive method;
Fig. 2 shows the block scheme by the inventive method;
Fig. 3 shows the effect of the obstacle of the differing heights that is arranged on the side; And
Fig. 4 shows the relation between the correction of overturning susceptibility and threshold value.
The specific embodiment
The modern system that is used to detect skip car event uses the micromachine rotation speed sensor to come work, and it also can calculate angle of rotation by digital integration.The combination of rotating speed data and rotation angle information can be predicted overturning, and forms the starting decision thus, and its starting than the fixing angle threshold by obliquity sensor has higher robustness and alerting ability.Thus except the original application of rollover detection, reversible roll-over shelf in the starting open carriage, also allow the irreversible retracting device of starting such as smoke screen explosive type belt pretensioner and vehicle window air bag based on the rollover detection system of rotation speed sensor.Representative type overturning process causes like this, when automobile during straight-line travelling because ambient conditions, force automobile at z to motion, movement in vertical direction just, this causes the rotation of automobile.Representative type example to this situation is bevelled inclined-plane, next door, track and slope, and this is provided by the guide plate of side in practice.For this mode, the transverse acceleration of generation is relatively low, and the passenger more just enters the situation that even can not enter so-called " improper seating position ", and passenger restraint system only just is necessary starting comparing to engrave when later like this.Represent the passenger not in the vehicle seat position in the situation of this " improper seating position ", the passenger can be protected best by retracting device in this case.
But it is just different under the situation that so-called earth ground stroke is tumbled.In this case, automobile side direction after centrifugal process is skidded, and enters the ground with higher coefficient of friction, and this ground is the unstable ground in next door, track.If automobile skids to the right, the tire on right side will bear violent deceleration so, and this can cause the moment of momentum of automobile.Be that the passenger is because the higher transversal deceleration of automobile enters " improper seating position " very early with the important difference of aforesaid overturning process.Thus must early moment by trigger suitable fender guard for example the vehicle window air bag protect the passenger make its avoid since collide cause on B-post or the glass for vehicle window injured.This starting early can not be used the not operation of current system with causing danger, and retracting device can by mistake detonate under many non-starting situations.The method that the present invention introduces can realize the starting moment more early under the situation of earth ground stroke.
In order to realize the starting of this morning under the situation of earth ground stroke, the present invention is except using rotative speed and y to also having used the y that determines with suitable manner to car speed to the parameter of acceleration/accel with z, i.e. the automobile cross velocity.
According to the present invention, starting decision forms like this, i.e. related except rotative speed and vehicle lateral acceleration, and vehicle lateral acceleration also is used for the threshold value decision, and wherein this threshold value is regulated according to the rotative speed of integration and the vehicle lateral acceleration of integration.Preferably use the automobile cross velocity for this reason.
Carry out the vehicle lateral acceleration a of filtering with suitable manner
yBe specially adapted to the threshold value decision, because the transverse acceleration that is applied on the tire has caused the overturning process.As verified, at automobile cross velocity v according to automobile test
yTransverse acceleration a under the situation about descending
yMust increase, automobile is overturned.In this its relation is not linear usually, and can determine to consider by passing threshold.The transverse acceleration that critical transverse acceleration just can cause overturning illustrates more properly that as the function of automobile cross velocity the approaching more high-revolving what is called of automobile cross velocity " critical glide speed (CSV) " then obtains bigger gradient.This CSV is defined as the cross velocity of automobile, under this critical glide speed according to basic physical principle just energy equilibrium be automobile impossible take place tumble.Characteristic precise forms and car category and relevant to the requirement of system.But in the following embodiments based on this always, i.e. characteristic curve, just the absolute value of critical transverse acceleration is as the function of automobile cross velocity, for the v that is descending
yValue is dull to be increased.
Except a
yCarry out the rotative speed ω around longitudinal vehicle axis of filtering in addition by rights
xAlso be applicable to the threshold value decision, it here uses as relating value.Although use ω
xSo not directly perceived, because it is a transversal deceleration, this transversal deceleration causes earth ground stroke.But the result that corresponding automobile test draws is ω in suitable filtering
xAnd a
yAll be suitable as the parameter of starting threshold value.
Be similar at first continuous in timely and accurately determine automobile cross velocity v
y, then after satisfying the starting conditions of algorithm, with detected a
y, ω
xAnd v
yValue continuously, just in each loop of algorithm, compare with critical value with characteristic curve form storage.If parameter is to (a
y, v
y) value having surpassed characteristic critical value sometime, then satisfy main starting conditions.Must guarantee that this transverse acceleration in fact also can cause rotation in addition.This can further discuss below.Except a
yIn addition, ω
xAlso can with according to v
yThe threshold value of regulating compares, perhaps according to v
yThreshold value can be used as ω
xFunction change.
Below based on this always, i.e. a
yFor negative, that is to say it is to slow down, and v
yAnd rotative speed ω
xFor just.Set out thus, i.e. a
yDetermine that by the sensor in the air bag controlled equipment symbol is stipulated according to the earth ground stroke that is caused by sideslip so left or to the right.Same v
ySymbol according to determining v
yCustom stipulate.At microcontroller, when just changing in the treater in air bag controlled equipment, following method provides:
By all parameter v
y, a
yAnd ω
xForm this tittle (
).Guarantee v by sign detection in addition
y, a
yAnd ω
xThe condition of explanation overturning process on same direction.
Can make the transverse acceleration of automobile overturning mainly determine, and obtain by using steady stability coefficient (SSF) to calculate by center of gravity of the automobile and wheelspan.Roughly be in the scope of SSF=1.0 to 1.7 for roadlice and sport utility vehicle representative type numerical value.SSF is the transverse acceleration of g corresponding to unit, and this acceleration/accel is necessary for the upset of automobile.| a
y| with v
yCharacteristic curve always have a value as the starting threshold value of minimum, it is on the SSF value of unit that this value is in g for corresponding automobile.But according to ground, also can on all tires, set up high acceleration/accel, just not only on right tire or left tire, set up this high acceleration/accel left,, can not cause that enough torques make automobile overturn though automobile breaks away like this to the right or when breakking away.Work as v if having only
yFunction | a
y| threshold value just can form the starting decision when being exceeded, can promptly under the situation of violent vehicle lateral acceleration, cause starting under the worst situation like this, and need not set up flip angle.In order to suppress starting in this case, advantageously an additional starting conditions is associated with on the rotational speed signal.Following method conduct provides the possible implementation of the additional consideration of rotational speed signal:
A) the additional starting conditions of conduct must surpass the threshold value with the rotative speed of suitable manner filtering.
B) must surpass the threshold value of the rotative speed of integration as additional starting conditions, the threshold value of the angle of Jian Liing just, wherein advantageously, the beginning of integration was associated with surmounting of rotative speed threshold value.
C) in addition the beginning of rotative speed integration can surmount with the threshold value of vehicle lateral acceleration and is associated.In this case, rotative speed has only when the vehicle lateral acceleration that carries out filtering by rights is in predetermined value and just carries out integration when above.Require resulting integration must surpass threshold value as additional starting conditions then, this integration has the dimension of angle.
When ω
xThe starting threshold value regard v as
yFunction the time, described just now task can not be finished.But for the relevant manoevreability that travels of non-earth ground stroke, for example when narrow and fast speed curve driving, may form very high rotative speed, this may cause the mistake starting.It is favourable additionally introducing the words based on the threshold value of vehicle lateral acceleration sensor signal in this case.Be similar to the aforesaid example that following conversion is described based on the additional starting conditions of rotational speed signal:
A) as additional starting conditions, must surmount threshold value with the vehicle lateral acceleration of suitable manner filtering.
B) must surmount the threshold value of the vehicle lateral acceleration of integration, the speed threshold value of falling just as additional starting conditions, wherein the threshold value of the initial and vehicle lateral acceleration of integration be surmounted that to be associated be favourable.
C) integration of vehicle lateral acceleration is surmounted with the threshold value of rotative speed be associated in addition: in this case, have only when the rotative speed with suitable manner filtering is in predetermined value just to begin vehicle lateral acceleration is carried out integration when above.Require the necessary exceeded threshold of resulting integration as additional starting conditions, this integration has the dimension of speed.
Under any circumstance just, all be favourable for the starting decision with the signal of rotation speed sensor and the signal correction connection of acceleration pick-up.Up to the present in the method for Miao Shuing, main starting decision is according to a
yAnd ω
xCharacteristic curve make, Fu Jia minor starting conditions is with ω then
xPerhaps a
yThe reasonableness check of response is the basis.Certain a
yAnd ω
xStarting decision can be equality also, that is to say not only for a
yAnd for ω
xDefined property curves all, its starting decision is interrelated with suitable manner, for example by a kind of simple logical AND.In addition with a
yAnd ω
xHandle (for example filtering and integration) and be associated with suitable manner.
Fig. 1 with block diagrams explaining by device of the present invention.Here only show the assembly of these participations for the sake of simplicity, have more assembly certainly and belong to whole device by the inventive method.Detection is around the rotative speed ω of longitudinal vehicle axis
x Rotation speed sensor 10 be connected to the first input end of treater 11.Connect an acceleration pick-up 12 on second input end of treater 11, this acceleration pick-up 12 detects vehicle lateral acceleration.Mouth at treater 11 has connected retracting device 13, as air bag, belt pretensioner and roll-over shelf.Assembly 10,11 and 12 can be in the common control convenience.But also sensor 10 and 12 can be arranged on the control convenience outside, and treater 11 is arranged in control convenience, this treater for example can be a microcontroller, and wherein sensor for example can be arranged on the kinematic sensors platform.Sensor 10 and 12 can be connected to the analog input end of microcontroller 11.In microcontroller 11, carry out analogue to digital conversion then.But for sensor 10 and 12 can all be digital sensor, its output be digital signal.Self-consistentency ground uses the digital input end of controller 11 then, to detect the sensor signal of rotation speed sensor 10 and acceleration pick-up 12.
Fig. 2 with block diagrams explaining by the flow process of the inventive method.In square frame 20, detect vehicle lateral acceleration a by acceleration pick-up 12
yThis vehicle lateral acceleration a
yOn the one hand in square frame 21, carry out integration, in square frame 24, make comparisons on the other hand with a threshold value, this threshold value according to the vehicle lateral acceleration of integration and in square frame 23 rotative speed of integration determine.Threshold ratio result obtains in square frame 26, to be formed the starting decision by comparative result.Rotative speed ω
xIn square frame 22, detect by sensor 10.This rotative speed also is to carry out integration as mentioned above on the one hand in square frame 23, carries out threshold ratio equally on the other hand in square frame 25, and wherein this threshold value also is to form according to the rotative speed of integration and the vehicle lateral acceleration of integration.The formation of threshold value forms by ratio as described like that, and so-called like this overturning susceptibility is regulated threshold value respectively.Rotative speed ω in square frame 25
xObtain in square frame 27 with the threshold ratio result of its threshold value, and be used for further processing.
Fig. 3 shows two kinds of representative type situations.The force of inertia F of left side automobile 30
InertiaPoint to the right.This force of inertia acts on the centre of gravity of vehicle.Show the arrow of expression force of inertia at this.Automobile 30 is to the right towards obstacle 31 motions.Therefore cause a torque by obstacle 31, it is by F
Inertia* the product of H obtains.At this H is vertical distance between obstacle upper limb (swivel point) and the centre of gravity of vehicle.The relatively figure on the left side and the figure on the right in Fig. 3, H1＞H2 must have bigger power or deceleration/decel to act on the automobile in the situation so on the right, could produce the identical torque that automobile is begun turning.
In Fig. 4, on abscissa, described overturning susceptibility S with arbitrary unit
OverturnOn ordinate, described correction factor g (S with arbitrary unit equally
Overturn).Curve 40 has been described its relation.Here be empirical relationship.Curve 40 also can substitute with form linear or index.
Claims (5)
1. be used to form the method that retracts system's starting decision, wherein should starting determine according to vehicle dynamics data (a
y, ω
x) form, wherein will be as a vehicle lateral acceleration (a of vehicle dynamics data
y) and the rotative speed (ω around longitudinal vehicle axis
x) interrelated, to form the starting decision, it is characterized in that: this vehicle lateral acceleration (a
y) also be used to form the starting decision except forming the threshold value decision, wherein first threshold is at least according to the vehicle lateral acceleration (a of integration
y) and the rotative speed (ω of integration
x) regulate, vehicle lateral acceleration is compared with described first threshold, is used to form the starting decision.
2. it is characterized in that in accordance with the method for claim 1: described first threshold is according to the rotative speed (ω of integration
x) with the vehicle lateral acceleration (a of integration
y) ratio regulate.
3. according to claim 1 or 2 described methods, it is characterized in that: described integration is according to vehicle lateral acceleration (a
y) beginning, the initial moment (T
0) be defined as the moment that acceleration/accel surpasses predetermined threshold value, and this integration is according to vehicle lateral acceleration (a
y) integrated value stop, stop (T constantly
n) be set to transverse acceleration (a
y) integration reach moment of a predetermined value.
4. according to claim 1 or 2 described methods, it is characterized in that: described rotative speed (ω
x) also make comparisons with second threshold value that is used to form the starting decision, this second threshold value is according to the rotative speed (ω of integration
x) and the vehicle lateral acceleration (a of integration
y) form.
5. it is characterized in that in accordance with the method for claim 4: described second threshold value is according to the rotative speed of integration and the vehicle lateral acceleration (a of integration
y) ratio form.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10344613.3 | 2003-09-25 | ||
| DE10344613A DE10344613A1 (en) | 2003-09-25 | 2003-09-25 | Method for forming a triggering decision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1856419A CN1856419A (en) | 2006-11-01 |
| CN100448720C true CN100448720C (en) | 2009-01-07 |
Family
ID=34384289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800278806A Expired - Fee Related CN100448720C (en) | 2003-09-25 | 2004-09-16 | Method for reaching a trigger decision |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7778755B2 (en) |
| EP (1) | EP1667878B1 (en) |
| JP (1) | JP4448846B2 (en) |
| CN (1) | CN100448720C (en) |
| DE (2) | DE10344613A1 (en) |
| WO (1) | WO2005030536A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004029374A1 (en) * | 2004-06-17 | 2006-01-05 | Robert Bosch Gmbh | Method for determining a triggering decision for restraining means of a motor vehicle |
| US7477974B2 (en) | 2004-07-27 | 2009-01-13 | Robert Bosch Gmbh | Vehicle restraint device control method and apparatus using dynamically determined threshold |
| DE102004040140A1 (en) * | 2004-08-19 | 2006-02-23 | Robert Bosch Gmbh | Method and device for eliminating a risk of tipping over of a motor vehicle |
| US7522982B2 (en) * | 2004-09-15 | 2009-04-21 | Ford Global Technologies, Llc | Methods and systems for detecting automobile rollover |
| US7239952B2 (en) * | 2004-12-08 | 2007-07-03 | Continental Teves, Inc. | Reduced order parameter identification for vehicle rollover control system |
| US7734394B2 (en) * | 2005-04-25 | 2010-06-08 | Robert Bosch Gmbh | System and method for sensing soil-and curb-tripped rollover events |
| ITRM20060571A1 (en) * | 2006-10-23 | 2008-04-24 | Dainese Spa | METHOD AND DEVICE FOR THE PREDICTION OF A FALL FROM A MOTORCYCLE |
| DE102007024821B3 (en) * | 2007-05-29 | 2008-11-27 | Continental Automotive Gmbh | Method and device for detecting a vehicle rollover |
| DE102007032591B3 (en) * | 2007-07-12 | 2008-09-04 | Vdo Automotive Ag | Automotive process and assembly to detect the condition of roll over and activate on-board safety systems |
| US7996132B2 (en) * | 2007-11-29 | 2011-08-09 | Robert Bosch Gmbh | Fast sensing system and method for soil- and curb-tripped vehicle rollovers |
| DE102007059414A1 (en) * | 2007-12-10 | 2009-06-18 | Robert Bosch Gmbh | Method and arrangement for controlling safety devices for a vehicle |
| DE102009046067A1 (en) * | 2009-10-28 | 2011-05-05 | Robert Bosch Gmbh | Method and control unit for detecting a safety-critical impact of an object on a vehicle |
| DE102009033760A1 (en) * | 2009-07-17 | 2011-01-27 | Continental Automotive Gmbh | Method for roll detection |
| DE102010027969B4 (en) * | 2010-04-20 | 2020-07-02 | Robert Bosch Gmbh | Method and device for determining a type of impact of an object on a vehicle |
| KR20120060509A (en) * | 2010-12-02 | 2012-06-12 | 현대자동차주식회사 | Inertial Measurement Intergrated Airbag Control Unit |
| DE102011115374A1 (en) | 2011-10-10 | 2013-04-11 | Continental Automotive Gmbh | Method for rollover detection of vehicle e.g. motor vehicle, involves determining transverse velocity of vehicle, and predicting staggering rate and staggering angle from transverse velocity discharge time and lateral acceleration |
| US9114772B2 (en) * | 2013-11-27 | 2015-08-25 | Bruce L Kepley | Centripetal phase shift isolation control system, in deflection, dampen, dissipation, transposition and isolation of a stochastic vector |
| US10493937B2 (en) | 2017-02-01 | 2019-12-03 | Ford Global Technologies, Llc | Restraint device deployment calibration |
| US11648900B2 (en) * | 2020-07-27 | 2023-05-16 | Robert Bosch Gmbh | Off-zone crash detection using lateral accelerations at different positions in a vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137779A (en) * | 1994-10-31 | 1996-12-11 | 大宇电子株式会社 | Method for judging collision with three directional accelerative signals and apparatus for performing the same |
| WO1999047384A1 (en) * | 1998-03-17 | 1999-09-23 | Autoliv Development Ab | A safety arrangement in a vehicle |
| EP1219500A2 (en) * | 2000-12-28 | 2002-07-03 | Toyota Jidosha Kabushiki Kaisha | Rollover determining apparatus and methods |
| DE10149112A1 (en) * | 2001-10-05 | 2003-04-30 | Bosch Gmbh Robert | Method for determining a triggering decision for restraint devices in a vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19744085A1 (en) * | 1997-10-06 | 1999-04-08 | Bosch Gmbh Robert | System producing trigger signal for vehicle safety unit with collision with low obstacle |
| US6542073B2 (en) * | 2000-12-20 | 2003-04-01 | Trw Inc. | System and method for sensing vehicle rollover |
-
2003
- 2003-09-25 DE DE10344613A patent/DE10344613A1/en not_active Ceased
-
2004
- 2004-09-16 JP JP2006500505A patent/JP4448846B2/en not_active Expired - Fee Related
- 2004-09-16 WO PCT/DE2004/002068 patent/WO2005030536A1/en active IP Right Grant
- 2004-09-16 DE DE502004003903T patent/DE502004003903D1/en active Active
- 2004-09-16 CN CNB2004800278806A patent/CN100448720C/en not_active Expired - Fee Related
- 2004-09-16 US US10/571,232 patent/US7778755B2/en not_active Expired - Fee Related
- 2004-09-16 EP EP04786787A patent/EP1667878B1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1137779A (en) * | 1994-10-31 | 1996-12-11 | 大宇电子株式会社 | Method for judging collision with three directional accelerative signals and apparatus for performing the same |
| WO1999047384A1 (en) * | 1998-03-17 | 1999-09-23 | Autoliv Development Ab | A safety arrangement in a vehicle |
| EP1219500A2 (en) * | 2000-12-28 | 2002-07-03 | Toyota Jidosha Kabushiki Kaisha | Rollover determining apparatus and methods |
| DE10149112A1 (en) * | 2001-10-05 | 2003-04-30 | Bosch Gmbh Robert | Method for determining a triggering decision for restraint devices in a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006524601A (en) | 2006-11-02 |
| CN1856419A (en) | 2006-11-01 |
| US20070168098A1 (en) | 2007-07-19 |
| EP1667878A1 (en) | 2006-06-14 |
| EP1667878B1 (en) | 2007-05-23 |
| US7778755B2 (en) | 2010-08-17 |
| DE502004003903D1 (en) | 2007-07-05 |
| WO2005030536A1 (en) | 2005-04-07 |
| DE10344613A1 (en) | 2005-05-04 |
| JP4448846B2 (en) | 2010-04-14 |
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